No, warping extracts the characteristics of each amp and combines the two into a completely new sound. Whereas panning or crossfading simply increases the level of one while decreasing the level of the other, while not actually combining their actual characteristics. The warp control changes the ratio of the characteristics between the two amps (for example: 25% Fender, 75% Marshall). Once you've created an overall ratio between the two that you like you can actually save that off as an individual amp hypermodel.